Valve anti-theft device and anti-theft ball valve structure

Abstract

The invention discloses a valve anti-theft device and an anti-theft ball valve structure, the anti-theft device is in bolted connection with a fixed object through a base and is provided with a mounting seat and a middle shell, an upper shell cover and a lower shell cover are arranged in a matched mode and movably lift relative to the middle shell to protect the middle shell, and power of a transmission motor is selected through an electromagnetic clutch type structure; selective lifting of the upper shell cover and the lower shell cover is controlled; the lock piece is arranged for connecting the valve piece to lock the valve piece relative to the base so that the valve piece cannot be away from the base, the second motor is arranged so that the upper end of the lock piece can be locked relative to the valve piece, the lower end of the lock piece is located in the anti-theft device and cannot be directly controlled, and therefore the disassembly difficulty is improved; according to the anti-theft device structure and the ball valve with the anti-theft design, by arranging the mode of improving illegal cost and theft difficulty, theft and illegal events are reduced laterally, a valve pipeline system is protected, loss of the sealing valve body is avoided, and fund loss is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of valve equipment, and in particular to a valve anti-theft device and an anti-theft ball valve structure. Background Art

[0002] The main components of a ball valve include a sphere with an aperture and inlet and outlet pipes on both sides of the sphere. It is usually made of metal, such as cast iron, stainless steel or copper, to ensure its strength and corrosion resistance. The flow of the fluid is controlled by rotating the sphere, and the rotation angle of the sphere determines the size of the fluid channel opening. When the sphere is aligned with the pipe, the fluid can flow freely through the pipe, achieving full opening of the channel. When the sphere is rotated to a position perpendicular to the pipe, the channel is closed and the fluid cannot pass through. In the middle position, the rotation of the ball can partially open or close the channel, thereby achieving fluid regulation.

[0003] Ball valves have excellent functions and are widely used in pipeline systems. However, some pipelines are laid in unattended places. Therefore, in order to prevent valves from being stolen, anti-theft valves are designed to prevent the loss of media in the pipeline and damage caused by poor management. Now, especially for heating systems, there is a period of time when there is no medium flowing in the pipeline. If the valve is removed and stolen, it will not be discovered in the first time.

[0004] Traditionally, the connecting flanges between valves and pipes are directly removed with tools, which makes it easy for criminals to do so. This is also one of the reasons why valves in public places are easily stolen. Therefore, it is very necessary to design a valve with an anti-theft design or an anti-theft structure for the valve. Summary of the invention

[0005] In view of the prior art, the purpose of the present invention is to provide an anti-theft device structure for valves and a ball valve with an anti-theft design, which can provide anti-theft protection for valves installed in public areas, increase the difficulty of disassembly by criminals, and thus reduce the occurrence of illegal valve theft incidents.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is: a valve anti-theft device, comprising: a base, the base is provided with a seat rod connected to a fixed object by bolts, and the upper end of the seat rod is provided with a mounting seat and a middle shell; a lock body, the lock body includes a motor 1 fixedly arranged on the mounting seat, and an electromagnetic clutch, gears A and gears B are respectively fixed on the rotating shafts at both ends of the motor 1, and the electromagnetic clutch is connected to a linkage gear assembly; an upper shell cover and a lower shell cover, the upper shell cover and the lower shell cover are movable and lifted relative to the middle shell of the base, the upper shell cover is used to be close to the valve member, and the lower shell cover is used to cover the bottom rod; the electromagnetic clutch is used to drive the linkage gear assembly to move relative to the rotating shaft, and the linkage gear assembly transmits the rotational force of gears A and gear B to the driving parts of the upper shell cover and the lower shell cover through the drive of the electromagnetic clutch, the gear A is used to control the movable lifting and lowering of the upper shell cover relative to the middle shell, and the gear B is used for the movable lifting and lowering of the lower shell cover relative to the middle shell; The locking member is used to connect the valve member to lock it relative to the base so that it cannot move away. A partition and a second motor located on the partition are also fixed on the mounting seat. The lower end of the locking member extends into the base. The second motor is connected to the lower end linkage member of the locking member, and the upper end of the locking member is locked relative to the valve member through the linkage member.

[0007] As a further configuration of the above scheme, a control box is also provided on the outer wall of the middle shell body, and the control box is provided with motor 1, motor 2, power supply of the electromagnetic clutch, and control connector. The control box is also provided with an opening and closing door with a lock for closing. The lock of the opening and closing door adopts an electromagnetic password lock. The control box and the electromagnetic sealed lock both adopt external batteries. The electromagnetic lock core of the electromagnetic sealed lock automatically locks the opening and closing door after power failure.

[0008] As a further configuration of the above scheme, the locking member includes an upper ferrule and a lower ferrule, the upper ferrule is provided with a threaded fixing rod rotatably arranged relative to the upper ferrule, the lower ferrule is provided with a threaded hole corresponding to the threaded fixing rod, the lower end of the threaded fixing rod is in a spline structure, and extends into the main shaft sleeve of the hollow inner spline structure of the second motor, and the second motor is circumferentially fixed through the spline structure, driving the threaded fixing rod to rotate with the main shaft sleeve, the threaded fixing rod is axially fixed to the upper ferrule and cooperates with the thread of the lower ferrule, the lower ferrule gradually rises until it abuts against the valve member, the threaded fixing rod rotates axially and moves downward, driving the upper ferrule downward, and finally the two cooperate to cover the flanges at both ends of the valve member for fixing to the pipeline.

[0009] As a further configuration of the above scheme, the gear A and gear B are divided into a meshing linkage component A with a corresponding gear member and a meshing linkage component B. The meshing linkage component A is used to threadably cooperate with the lower shell internal threaded member of the lower shell cover, and the transmission motor transmits a rotational force to the lower shell internal threaded member to rotate it, and the meshing linkage component B is used to threadably cooperate with the upper shell cover with the upper shell internal threaded block to move relative to the middle shell.

[0010] As a further configuration of the above scheme, it also includes an upper shell cover, on which a fixing pin is arranged, and on the middle shell body an electromagnetic lock pin, a reset spring and an electromagnet part are arranged, wherein the electromagnetic part is used to drive the electromagnetic lock pin to axially move and compress the reset spring, and the reset spring is used to drive the electromagnetic lock pin to extend and plug into the fixing hole on the fixing pin.

[0011] An anti-theft ball valve structure is also provided, which can be applied to the above-mentioned anti-theft device, and includes a valve body and a driving unit. A valve stem and a valve core are arranged in the valve body, and a medium flow channel is also arranged in the valve body. An anti-theft component is arranged on the upper end of the valve stem, and the anti-theft component includes a lock cylinder part coaxially connected to the valve stem, a linkage pin and a spring are arranged in the lock cylinder part, the lock cylinder part is rotatably arranged relative to the valve stem, the linkage pin is telescopically arranged relative to the valve stem, a rotation groove and a linkage notch are arranged on the valve stem relative to the linkage pin, and a top rod circumferentially fixed after being plugged with the linkage pin is arranged on the side of the driving unit facing the valve stem.

[0012] Beneficial effects: The valve anti-theft device of the present invention is provided with a fixed object, such as a base fixed with ground bolts. The base is fixed with ground bolts, so that even if criminals cut the pipeline, they cannot remove the valve. The base is provided with all-round protection, so that criminals cannot dismantle it, which increases the difficulty of illegal behavior and reduces the occurrence of illegal events. 1. The base is provided with several power mechanisms. After the base is fixed to the ground, the electromagnetic clutch selectively links the motor 1, and the motor 1 drives the lower shell cover to lower and cover the fixing bolt position of the base, so that the disassembly tool cannot be directly inserted. The lower shell cover made of metal and fitting the outer contour of the base can enhance its protection ability and reduce the possibility of explosive damage. This design can greatly increase the difficulty for criminals to dismantle the anti-theft device in a relatively fixed position, increase the cost of illegal operation, and thus reduce the occurrence of incidents; 2. Motor 1 is also used to drive the upper shell cover to rise. The rising height is close to the bottom of the valve. The rising upper shell cover and the partition can form the first line of protection for various components set on the central shell. The upper shell cover is fixed from above to form a relatively closed inner cavity, so that criminals cannot directly damage the interior and protect the anti-theft device from illegal dismantling. 3. After the upper shell cover and the upper shell cover are installed, all-round protection is formed for the valve parts. First, it prevents the valve from being disassembled. Second, it prevents the valve from being unscrewed by non-staff such as children when it is not used for a long time, resulting in leakage of pipeline control. In addition, it can also play a secondary function such as dust prevention, and prolong the service life of the valve; 4. The present invention also proposes a design for preventing the valve from being opened by theft or by mistake. By setting the upper shell cover, direct manipulation by the outside world can be avoided. However, some places are not suitable for setting the upper shell cover. In the present invention, the upper shell cover, the upper shell cover, the lower shell cover and the lock are all required and are controlled by an external control device. Therefore, in some embodiments, the upper shell cover does not need to be installed. In order to realize the anti-theft opening of the valve, the structure of the hand wheel and the valve stem can be set to form a design that the hand wheel cannot be correctly opened and closed if it is not correctly controlled, thereby avoiding the problem of mis-opening and theft to a certain extent. 5. The upper and lower ferrules provided in the present invention drive the screw thread of the second power motor to cooperate with the lower ferrule to tighten the upper ferrule, thereby tightening and fixing the fixed flange position of the valve, thereby further increasing the difficulty of theft and improving the anti-theft effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the valve anti-theft device of the present invention.

[0014] Figure 2 It is a schematic diagram of the internal structure of the valve anti-theft device of the present invention.

[0015] Figure 3 For this embodiment Figure 2 A partial enlarged view.

[0016] Figure 4 This is a structural view of the lock body of this embodiment.

[0017] Figure 5 It is a cross-sectional view of the anti-theft device of this embodiment.

[0018] Figure 6 It is the AA cross-sectional view of this embodiment.

[0019] Figure 7 It is the BB cross-sectional view of this embodiment.

[0020] Figure 8 It is a schematic diagram of the structure of the anti-theft ball valve of this embodiment.

[0021] Figure numerals: 1, base; 11, seat rod; 12, mounting seat; 13, middle shell; 14, upper shell cover; 141, upper shell internal thread block; 15, lower shell cover; 151, lower shell internal thread member; 16, control box; 17, opening and closing door; 18, upper shell cover; 181, fixing pin rod; 182, fixing hole; 2, lock body; 20, motor 2; 21, motor 1; 211, rotating shaft; 212, gear A; 213, gear B; 22, electromagnetic clutch; 23, linkage gear assembly; 3, lock piece; 31, upper ferrule; 3 2. Lower ferrule; 33. Threaded fixing rod; 331. Main shaft sleeve; 34. Threaded hole; 35. Slot part; 351. Swinging slot; 352. Rotating flat slot; 41. Meshing linkage assembly A; 42. Meshing linkage assembly B; 44. Electromagnetic locking pin; 45. Return spring; 46. Electromagnetic iron parts; 8. Valve parts; 80. Valve body; 81. Flange; 82. Drive unit; 84. Valve stem; 85. Lock cylinder part; 86. Linkage pin; 87. Spring; 88. Rotating slot; 89. Linkage notch; 9. Pipeline; 90. Push rod. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described in detail in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other, and it is worth noting that at least two synchronously linked rotating shafts are set in multiple places in the present invention, and the linkage method includes but is not limited to synchronously transmitting the rotation between the two through a toothed transmission belt and a transmission gear, and in the process of gear meshing transmission, there is a problem of turning force steering. When encountered, according to the actual steering and the driver setting of the motor, the rotation direction can be controlled by setting a fantasy gear part. In addition, the motor of this embodiment drives any unit in a single drive mode, that is, drives the upper shell cover to move, and other active parts are in a stationary state to avoid interference with the operation of multiple parts in the linkage state.

[0023] like Figure 1-7The valve anti-theft device of the present invention shown in the figure comprises: a main structural base 1 of the device. The anti-theft device of the present invention needs to punch a hole on a fixed object during implementation, and then fix the fixed object with a seat rod 11 provided on the base 1 and connected with the fixed object by bolts. The difference from the prior art is that after the base 1 of the prior art is fixed, the criminals only need to carry a bolt removal tool to directly loosen and tighten the bolts and remove the base 1, while the base 1 provided in the present invention also includes a mounting seat 12 and a middle shell 13 provided at the upper end of the seat rod 11, and an upper shell cover 14 and a lower shell cover 15 are provided correspondingly. The upper shell cover 14 and the lower shell cover 15 are movable and raised relative to the middle shell 13 of the base 1, and the upper shell cover 14 is used to be close to the valve. The door member 8 and the lower shell cover 15 are used to cover the seat rod 11, and a number of driving structures are arranged in the middle shell 13. Through the driving structure, the lower shell cover 15 is raised and lowered to cover the bolts on the base 1, so that criminals cannot easily remove the bolts directly. Secondly, the upper shell cover 14 is raised and lowered, the locking power of the lock member 3 is provided, and the upper shell cover 18 is arranged to protect and cover the valve member 8 and the components on the mounting seat 12. In addition, as shown in the above-mentioned scheme, a number of structures arranged on the middle shell 13 of the present invention require the staff to carry an external power supply device to connect to the power supply, and connect the data cable to the internal control circuit board to control the various power structure components inside it, so as to realize the control and disassembly of the anti-theft device wrapped in the iron shell.

[0024] The mounting seat 12 of the present embodiment is provided with a lock body 2, and the lock body 2 includes a motor 21 fixedly arranged on the mounting seat 12, and a plurality of electromagnetic clutches 22 with linkage gear assemblies 23, wherein gears A212 and gears B213 are respectively fixed on the rotating shafts 211 at both ends of the motor 21, and the electromagnetic clutch 22 is used to drive the linkage gear assembly 23 to move relative to the rotating shaft 211, and the linkage gear assembly 23 transmits the rotational force of the gears A212 and B213 to the driving parts of the upper shell cover 14 and the lower shell cover 15 through the driving of the electromagnetic clutch 22, and the gear A212 is used to control the movable lifting and lowering of the upper shell cover 14 relative to the middle shell 13, and the gear B213 is used for the movable lifting and lowering of the lower shell cover 15 relative to the middle shell 13; when the motor 21 is started, the gears A212 and B213 rotate simultaneously, and at this time, when no external control command is received, the electromagnet arranged in the electromagnetic clutch 22 is in a power-off state, and the linkage gear assembly 23 arranged on the electromagnetic clutch 22 keeps the state of the spring structure driving to one side, but, as Figure 5As shown, at this time, the linkage gear assembly 23 is always meshed with the gear A212 and the gear B213 and keeps rotating, but the helical gear inside the linkage gear assembly 23 is kept away from the meshing linkage assembly A41 and the meshing linkage assembly B42 until the electromagnetic clutch 22 receives the control command, the electric iron core is magnetized and extended to drive the linkage gear assembly 23 to contact the meshing linkage assembly A41 and the meshing linkage assembly B42, and the meshing transmission is engaged. It is worth noting that based on the fact that the linkage gear assembly 23 is directly extended to mesh with the meshing linkage assembly A41 and the meshing linkage assembly B42 gears, there may be a problem of tooth misalignment in this process. The linkage gear assembly 23 of this embodiment includes a gear The disc and the driving gear disc are moved toward the driving top spring member that approaches the meshing linkage component A41 and the meshing linkage component B42. The purpose of setting the driving top spring member here is that when the above-mentioned problem occurs, the spring gives the gear disc an elastic range, but when the motor 21 rotates, the gear disc pushed by the elastic force will complete the meshing with the meshing linkage component A41 and the meshing linkage component B42 after a slight movement, thereby maintaining continuous transmission. It is worth noting that when the linkage gear assembly 23 is retracted, that is, the electromagnetic clutch 22 is in a power-off state, the retracted gear disc is far away from the gear parts of the meshing linkage component A41 and the meshing linkage component B42, and will not abut against the gear parts due to the drive of the driving top spring member.

[0025] The lock 3 of the present invention is used to connect the valve member 8 to lock it relative to the base 1 so that it cannot move away. The lock 3 includes an upper clamping sleeve 31 and a lower clamping sleeve 32. The upper clamping sleeve 31 is provided with a threaded fixing rod 33 that is rotatably arranged relative to the upper clamping sleeve 31. The lower clamping sleeve 32 is provided with a threaded hole 34 corresponding to the threaded fixing rod 33. Figure 3-4 As shown, the upper clamping sleeve 31 of this embodiment is used to prevent the big head at the end of the threaded fixing rod 33 from being further provided with a slot portion 35, a swinging groove 351 is provided in the middle of the slot portion 35, and a rotating flat groove 352 is provided on one side of the swinging groove 351 of the slot portion 35. It is worth noting that when the big head of the threaded fixing rod 33 of this embodiment is connected to the upper clamping sleeve 31, the threaded fixing rod 33 needs to be in a horizontal direction, the big head is inserted into the slot portion 35, and after entering the swinging groove 351, it is turned downward 90° and then continued to be inserted. At this time, the big head is embedded in the rear half of the slot portion 35, and the slot portion 35 without the rotating flat groove 352 and the swinging groove 351 restricts its axial and swinging activities.

[0026] Furthermore, a partition 121 and a motor 20 located on the partition 121 are fixed to the mounting seat 12 of the present invention. The partition 121 can be fixed to the mounting seat 12 by bolts. It is necessary to avoid the component structure below, and a through hole should be reserved on the partition 121 for the rotating shaft of the meshing linkage component B42 to extend. The purpose of the motor 20 arranged on the partition 121 is to allow the lower end of the lock member 3 to extend into the base 1, and to drive the lock member 3 to form a buckle lock by connecting the lower end linkage member of the lock member 3 through the motor 20, so that the upper end of the lock member 3 is locked relative to the valve member 8. As a further setting of the above scheme, the lower end of the threaded fixing rod 33 of the present invention is a spline structure. When in use, the threaded fixing rod 33 is first connected with the upper sleeve 31 according to the above-mentioned parts, and then threadedly matched with the lower sleeve 32 buckled under the flange 81. Here, it is necessary to manually rotate the threaded fixing rod 33 so that it continues to extend downward by thread until it abuts against the hollow inner spline structure extending into the motor 20. The motor 20 is then circumferentially fixed in the main shaft sleeve 331 based on the spline structure of the threaded fixing rod 33 and the main shaft sleeve 331. Therefore, when the motor 20 is started, the threaded fixing rod 33 generates a rotational force as the main shaft sleeve 331 of the motor 20 rotates (the large head of the end of the threaded fixing rod 33 is located in the upper sleeve 31 to maintain the circumferential movable setting). The threaded fixing rod 33 is axially fixed to the upper sleeve 31 and threadedly cooperates with the lower sleeve 32. Under the spiral rotation cooperation, the lower sleeve 32 cannot rotate by itself, so it gradually rises until it abuts against the lower half circle of the flange 81 of the valve member 8. The threaded fixing rod 33 continues to rotate, thereby generating an axial downward movement. At this time, it will drive the upper sleeve 31 that was originally away from the flange 81 downward. Finally, the two cooperate to cover the flanges 81 at both ends of the valve member 8 for fixing to the pipe 9. It is worth noting here that the length of the main shaft sleeve 331 should be increased based on the length of the threaded fixing rod 33 to meet the axial expansion and contraction of the threaded fixing rod 33 inside it.

[0027] Furthermore, a control box 16 is provided on the outer wall of the middle shell 13 of the present invention, and the control box 16 is provided with a power supply and a control connector for a motor 1 21, a motor 20, and an electromagnetic clutch 22. The control box 16 is also provided with a locked opening and closing door 17 for closure. The lock of the opening and closing door 17 adopts an electromagnetic password lock. The control box 16 and the electromagnetic sealed lock both adopt external batteries. The electromagnetic lock core of the electromagnetic sealed lock automatically locks the opening and closing door 17 after power failure. The present invention adopts the design of an external power supply, and its purpose also includes that the application field of the present invention is relatively niche, and it is more used in some public areas that will not be frequently started for a long time. Therefore, battery storage is relatively useless. The use of an external power supply can ensure the power supply on the one hand, and on the other hand, it can also increase an anti-theft measure by adopting the unique design of some common connectors in the prior art with non-standard anti-theft structures, thereby increasing the difficulty of operation for criminals.

[0028] As a further configuration of the above scheme, the gear A212 and the gear B213 correspond to the meshing linkage assembly A41 and the meshing linkage assembly B42 with the gear member, the meshing linkage assembly A41 is used to thread with the lower shell internal thread member 151 of the lower shell cover 15 to drive the lower shell cover 15 to move up and down, and the meshing linkage assembly B42 is used to thread with the upper shell internal thread block 141 of the upper shell to move relative to the middle shell 13. It is worth noting that the several rotating shafts in this embodiment are threadedly driven with the shell member, and the meshing linkage assembly A41 and the meshing linkage assembly corresponding to the gear A212 and the gear B213 are meshed with the gear A212 and the gear B213. The shaft rod driven by B42 is finally threadedly matched with the lower shell internal threaded part 151 and the upper shell internal threaded block 141 which remain fixed relative to the lower shell cover 15 and the upper shell cover 14. In this process, the lower shell internal threaded part 151 and the upper shell internal threaded block 141 on the lower shell cover 15 and the upper shell cover 14 can be regarded as a circumferentially fixed nut, and the shaft rod driven by the meshing linkage component A41 and the meshing linkage component B42 is a threaded rod, which is driven by rotating the threaded rod to drive the nut (upper shell cover 14 and lower shell cover 15) to move axially along the threaded rod (rotating shaft rod, shown in the figure, not marked), thereby realizing the lifting and lowering operation of the lower shell cover 15 and the upper shell cover 14.

[0029] Furthermore, the present invention further comprises an upper shell cover 18, on which a fixing pin 181 is arranged, and on the middle shell 13, an electromagnetic lock pin 44, a return spring 45 and an electromagnetic member 46 are arranged, and the electromagnetic member 46 is used to drive the electromagnetic lock pin 44 to axially move and compress the return spring 45, and the return spring 45 is used to drive the electromagnetic lock pin 44 to extend and plug into the fixing hole 182 on the fixing pin 181. It is worth noting that the application of the upper shell cover 18 in the present invention is firstly to cover the top cover of the device to enhance the anti-theft, secondly to provide dustproof, and thirdly to cover the upper valve member 8 operating part, and also to prevent the illegal twisting of the valve by lawless elements, and its locking principle is as follows: Figure 7 As shown, the electromagnetic lock pin 44 is driven by the electromagnet part 46 and the return spring 45 to extend and retract relative to the fixed pin rod 181. When the electromagnet part 46 is de-energized, the electromagnetic lock pin 44 is driven to extend by the return spring 45. After the fixed pin rod 181 is extended, the electromagnetic lock pin 44 is inserted into the fixing hole 182 of the fixed pin rod 181. It is worth noting here that an inclined surface is provided on the upward end of the electromagnetic lock pin 44 (the angle cannot be observed in the figure, and the structure is relatively simple and not drawn relative to the existing one. The inclined surface drive of the prior art can be referred to), and a pushing inclined surface portion is correspondingly provided on the fixed pin rod 181. When the fixed pin rod 181 is inserted downward, the two cooperate with the inclined surfaces to drive the electromagnetic lock pin 44 to compress the return spring 45 and move, and after the electromagnetic lock pin 44 is aligned with the fixing hole 182, it is extended to complete the locking and insertion.

[0030] The anti-theft ball valve structure includes a valve body 80 and a drive unit 82. A valve stem 84 and a valve core are arranged in the valve body 80. A medium flow channel is also arranged in the valve body 80. An anti-theft component is arranged on the upper end of the valve stem 84. The anti-theft component includes a lock cylinder 85 coaxially connected to the valve stem 84. A linkage pin 86 and a spring 87 are arranged in the lock cylinder 85. The lock cylinder 85 is rotatably arranged relative to the valve stem 84. The linkage pin 86 is telescopically arranged relative to the valve stem 84. A rotation groove 88 and a linkage notch 89 are arranged on the valve stem 84 relative to the linkage pin 86. The drive unit 82 is provided with a push rod 90 circumferentially fixed after being plugged with the linkage pin 86 on the side facing the valve stem 84.

[0031] As mentioned above, the structure is combined Figure 8 As shown, the driving unit 82 of this embodiment is Figure 8 The handwheel structure exemplified in the figure can be disassembled relative to the valve body 80. After disassembly, it can be taken away or stored by other means to prevent non-staff from illegally operating the valve body and to prevent the pipeline medium from being stolen. When the correct handwheel is put in, the linkage pin 86 is pushed downward by the push rod 90. When the handwheel moves downward, the linkage pin 86 is just located at the linkage groove 89. After the handwheel circumferentially fixed with the linkage pin 86 is rotated, the circumferential linkage valve stem 84 is rotated to open and close the valve. It is worth noting that under the push of an incorrect handwheel, the linkage pin 86 may It will be located in the rotating groove 88 above and below the linkage groove 89. At this time, the linkage pin 86 will cause the valve stem 84 to rotate circumferentially, and the linkage cannot be achieved. The linkage pin 86 may not be able to move upward or downward due to axial jamming. At this time, only the correct hand wheel needs to be inserted to achieve circumferential fixation. After rotating a certain angle, the linkage pin 86 can be reset or correctly positioned. This design is an anti-theft measure to avoid illegal or improper operation of the valve. It can be used in some places with special working conditions to prevent non-staff from operating the pipeline to open and close the valve, causing danger.

[0032] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A valve anti-theft device, characterized in that: include: A base (1), the base (1) is provided with a seat rod (11) connected to a fixed object by bolts, and the upper end of the seat rod (11) is provided with a mounting seat (12) and a middle shell (13); The lock body (2) comprises a motor (21) fixedly arranged on a mounting seat (12), and an electromagnetic clutch (22), a gear A (212) and a gear B (213) being fixedly arranged on the rotating shaft (211) at both ends of the motor (21), and the electromagnetic clutch (22) is connected to a linkage gear assembly (23); An upper shell cover (14) and a lower shell cover (15), the upper shell cover (14) and the lower shell cover (15) are movable and lifted relative to the middle shell body (13) of the base (1), the upper shell cover (14) is used to be close to the valve member (8) and cover the cavity between the valve member (8) and the mounting seat (12), and the lower shell cover (15) is used to cover the mounting bolt portion of the seat rod (11); the electromagnetic clutch (22) is used to drive the linkage gear assembly (23) to move relative to the rotating shaft (211), and the linkage gear assembly (23) is meshed with the gear A (212) and the gear B (213) through the driving of the electromagnetic clutch (22), so that the rotational force of the motor 1 (21) is transmitted to the driving members of the upper shell cover (14) and the lower shell cover (15), the gear A (212) is used for the movable lifting of the upper shell cover (14) relative to the middle shell body (13), and the gear B (213) is used for the movable lifting of the lower shell cover (15) relative to the middle shell body (13); The locking member (3) is used to connect the valve member (8) to lock it relative to the base (1) so that it cannot move away. The mounting seat (12) is also fixed with a partition (121) and a second motor (20) located on the partition (121). The lower end of the locking member (3) extends into the base (1). The second motor (20) is connected to the lower end linkage member of the locking member (3), and the upper end structure of the locking member (3) is locked relative to the valve member (8) through the linkage member.

2. A valve anti-theft device according to claim 1, characterized in that: A control box (16) is also provided on the outer side wall of the middle housing (13). The control box (16) is provided with a power supply and a control connector for a motor 1 (21), a motor 2 (20), and an electromagnetic clutch (22). The control box (16) is also provided with a lockable opening and closing door (17) for sealing. The lock of the opening and closing door (17) adopts an electromagnetic password lock. Both the control box (16) and the electromagnetic sealing lock adopt an external battery. When the electromagnetic lock core of the electromagnetic sealing lock loses power, it automatically locks the opening and closing door (17).

3. A valve anti-theft device according to claim 1, characterized in that: The locking element (3) comprises an upper clamping sleeve (31) and a lower clamping sleeve (32); the upper clamping sleeve (31) is provided with a threaded fixing rod (33) rotatably arranged relative to the upper clamping sleeve (31); the lower clamping sleeve (32) is provided with a threaded hole (34) corresponding to the threaded fixing rod (33); the lower end of the threaded fixing rod (33) is in a spline structure and is used to extend into a main shaft sleeve (331) with a hollow inner spline structure on the motor 2 (20); the motor 2 (20) is circumferentially connected to the motor 2 (20) through the spline structure. The threaded fixing rod (33) is fixed, driving the threaded fixing rod (33) to rotate with the main shaft sleeve (331), and the threaded fixing rod (33) is axially fixed to the upper clamping sleeve (31), and is arranged in threaded cooperation with the lower clamping sleeve (32). The lower clamping sleeve (32) gradually rises until it abuts against the valve member (8). The threaded fixing rod (33) continues to rotate and continues to move axially downward, driving the upper clamping sleeve (31) downward. The two cooperate with the flanges (81) at both ends of the cover buckle valve member (8) for fixing to the pipeline (9) to complete locking.

4. A valve anti-theft device according to claim 1, characterized in that: The gear A (212) and the gear B (213) are respectively a meshing linkage assembly A (41) and a meshing linkage assembly B (42) with a gear member and a rotating shaft, wherein the meshing linkage assembly A (41) is used for threadingly cooperating with a lower shell internal thread member (151) of the lower shell cover (15) to drive the lower shell cover (15) to move up and down, and the meshing linkage assembly B (42) is used for threadingly cooperating with an upper shell internal thread block (141) to drive the upper shell cover (14) with an upper shell internal thread block (141) to move relative to the middle shell (13).

5. A valve anti-theft device according to claim 1, characterized in that: The invention also comprises an upper shell cover (18), on which a fixing pin (181) is arranged, and on which an electromagnetic lock pin (44), a return spring (45) and an electromagnet (46) are arranged. The electromagnetic lock pin (44) is used to drive the electromagnetic lock pin (44) to move axially to compress the return spring (45), and the return spring (45) is used to drive the electromagnetic lock pin (44) to extend and insert into a fixing hole (182) on the fixing pin (181).

6. An anti-theft ball valve structure, comprising a valve body (80) and a drive unit (82), wherein a valve stem (84) and a valve core are arranged in the valve body (80), and a medium flow channel is also arranged in the valve body (80), characterized in that: An anti-theft component is arranged at the upper end of the valve stem (84), and the anti-theft component includes a lock cylinder component (85) coaxially connected to the valve stem (84), a linkage pin (86) and a spring (87) are arranged in the lock cylinder component (85), the lock cylinder component (85) is rotatably arranged relative to the valve stem (84), the linkage pin (86) is telescopically arranged relative to the valve stem (84), a rotation groove (88) and a linkage groove (89) are arranged on the valve stem (84) relative to the linkage pin (86), and a push rod (90) is arranged on the side of the drive unit (82) facing the valve stem (84) and is circumferentially fixed after being plugged into the linkage pin (86).

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